Reid, Eric; RT Logic Inc. (International Foundation for Telemetering, 2006-10)
      Modern telemetry and data streams are often encrypted. The majority of range testing activities require multiple ground stations to collect these streams and send them to a central processing location. Each of these streams currently needs to be individually decrypted before best source selection, processing and analysis. Using innovative techniques, it is possible to time correlate these encrypted streams, compare them with each other and create an output stream of better quality than any of the individual streams. This stream can then be decrypted by a single decryption device, greatly reducing cost and complexity.

      Lockard, Michael T.; Rajagopalan, R.; Garling, James A.; EMC Corporation, Solutions Engineering Group (International Foundation for Telemetering, 2006-10)
      Rapid access to ever-increasing amounts of test data is becoming a problem. The authors have developed a data-mining methodology solution approach to provide a solution to catalog test files, search metadata attributes to derive test data files of interest, and query test data measurements using a web-based engine to produce results in seconds. Generated graphs allow the user to visualize an overview of the entire test for a selected set of measurements, with areas highlighted where the query conditions were satisfied. The user can then zoom into areas of interest and export selected information.
    • Securing Print Services for Telemetry Post-Processing Applications

      Hines, Larry; Kalibjian, Jeff; Hewlett Packard Corporation (International Foundation for Telemetering, 2006-10)
      One of the primary goals of telemetry post processing is to format received data for review and analysis. This occurs by both displaying processed data on video monitors and by printing out the results to hardcopy media. Controlling access (i.e. viewing) of telemetry data in soft form (i.e. video monitor) is achieved by utilizing the existing framework of authentication and authorization on the client/server machines hosting the telemetry data (and post processing applications). Controlling access to hardcopy output has historically been much more problematic. This paper discusses how to implement secure printing services for telemetry post processing applications.

      Ferrill, Paul; Avionics Test and Analysis Corporation (International Foundation for Telemetering, 2006-10)
      As more aircraft are fitted with solid state memory recording systems, the need for a large data archival storage system becomes increasingly important. In addition, there is a need to keep classified and unclassified data separate but available to the aircrews for training and debriefing along with some type of system for cataloging and searching for specific missions. This paper will present a novel approach along with a reference design for using commercially available hardware and software and a minimal amount of custom programming to help address these issues.

      Dawson, Dan; Wyle Laboratories, Telemetry and Data Systems (International Foundation for Telemetering, 2006-10)
      This paper describes an adaptive data management architecture capable of supporting order-of-magnitude data volume increases without a priori knowledge of data structures. The architecture allows users to generate and maintain data in optimal legacy formats while managing and extracting information with common analysis tools. This paper shows how an object-oriented data management system can manage both data and the knowledge imparted to the data by users.

      Reil, Michael J.; Bartlett, T. George; Henry, Kevin; SFA Inc.; Aberdeen Test Center; Sverdrup Technology Inc. (International Foundation for Telemetering, 2006-10)
      This paper is a follow on to a paper presented at the 2005 International Telemetry Conference by Dr. Samuel Harley et. al., titled Data, Information, and Knowledge Management. This paper will describe new techniques and provide further detail into the inner workings of the VISION (Versatile Information System – Integrated, Online) Engineering Performance Data Mart.

      Portnoy, Michael; Yang, Hsueh-Szu; Teletronics Technology Corporation (International Foundation for Telemetering, 2006-10)
      Traditional data acquisition systems have relied on physical connections between data sources and data receivers to handle the routing of acquired data streams. However, these systems grow exponentially in complexity as the number of data sources and receivers increases. New techniques are needed to address the ever increasing complexity of data acquisition. Furthermore, more advanced mechanisms are needed that move past the limitations of traditional data models that connect each data source to exactly one data receiver. This paper presents a software framework for the playback of multiplexed data acquired from a network acquisition system. This framework uses multicast technologies to connect data sources with multiple data receivers. The network acquisition system is briefly introduced before the software framework is discussed. Both the challenges and advantages involved with creating such a system are presented. Finally, this framework is applied to an aviation telemetry example.

      Pillai, Sreelal Sreedharan; Sankarattil, Sreekumar; Padmanabhan, Padma; Rao, Vinod Padmanabha; Pillai, Sivasubramonia; Pillai, Madaswamy; Kollamparambil, Damodaran; Kurian, Thomas; Thirunavukkarasu, Chidambaram; Indian Space Research Organization (International Foundation for Telemetering, 2006-10)
      We describe the design and development of a baseband telemetry system for multistage launch vehicles. The system is organized as a three tier one with remote data acquisition and processing units and a centralized control unit. The front-end Data Acquisition Units (DAUs) feature software programmable amplification, offset, filtering and sensor excitation and thus are flexible to interface directly to a variety of sensors used in launch vehicles. The Data Processing Units (DPUs) gather data from DAUs through a serial link compatible to RS-485 standards and carry out a variety of data analysis and data compression functions on selected channels under software control. The central Telemetry Control Unit (TCU) receives this data through a transformer isolated link compatible to MIL-1553B standards and performs the functions of data delay, data storage, onboard computer data monitoring, PCM formatting and pre-modulation signal conditioning to achieve miniaturization. The configuration and features of this telemetry system make its integration simple without compromising on data integrity and reliability and suit the adoption of futuristic technologies and concepts such as smart sensor networks, adaptability, reconfiguration and vehicle health management.
    • An Overview Of An Instrumentation Hardware Abstraction Language

      Hamilton, John; Fernandes, Ronald; Koola, Paul; Jones, Charles H.; Knowledge Based Systems, Inc; Edwards Air Force Base (International Foundation for Telemetering, 2006-10)
      In this paper we provide the motivation for a neutral instrumentation hardware abstraction language that is focused on the description and control of instrumentation systems and networks. We also describe the design approach and structure of such a language that meets the needs. The language design is described according to the three roles it must serve: (1) as a descriptive language for specifying and describing the components and configuration of an instrumentation system, (2) as a command language for issuing configuration and data commands to instrumentation hardware and (3) as a query language for requesting the current state of instrumentation hardware.

      Berdugo, Albert; Hildin, John; Teletronics Technology Corporation (International Foundation for Telemetering, 2006-10)
      Airborne data acquisition systems have changed very little over the years. Their growth has primarily been in the area of digital filtering and the acquisition of new avionic busses. Communication between data acquisition units operating as a system still employs Time Division Multiplexing scheme. These schemes utilize command and data busses like CAIS and PCM. Although this approach is highly efficient, it has many drawbacks. These drawbacks have resulted in rigid system architecture, system bandwidth limitations, highly specialized recorders to acquire unique avionic busses that would otherwise overwhelm the system bandwidth, and unidirectional flow of data and control. This paper describes a network centric data acquisition system that is Ethernet based. Although Ethernet is known as an asynchronous bus, the paper will describe a deterministic time distribution over the bus per IEEE-1588 that allows the use of a packet network for airborne data acquisition. The acquisition unit within the network system is defined by its MIB (Management Information Base) and operates as a data source unit. Other network components may operate as a data sink unit, such as recorders, or as a data source and sink. The role of different units in the network system will be evaluated. The paper will also describe network gateways that allow the use of traditional PCM systems with a network-based system.

      Temple, Kip; Laird, Daniel; Edwards Air Force Base (International Foundation for Telemetering, 2006-10)
      In a quest to provide networked communication to test assets at all of the Major Range and Test Facility Bases (MRTFB), the integrated Network Enhanced Telemetry (iNET) Program was formed. A study was accomplished outlining five environments that encompass the work of these MRTFBs. The first of these environments to be advanced towards networked communication is the Aeronautical Environment. In order to develop these technologies, a test platform is proposed, realized, and tested. This airborne test platform will be used for concept and product testing and validation of the three portions of the Telemetry Network System (TmNS); the vehicle network, vNET, the radio frequency network (RF), rfNET, and the interface to the ground network, gNET. This paper will present the baseline system configuration, describe its operation, and detail RF link testing results.

      Laird, Daniel; Temple, Kip; Edwards Air Force Base (International Foundation for Telemetering, 2006-10)
      The Central Test and Evaluation Investment Program (CTEIP) Integrated Network Enhanced Telemetry (iNET) program is currently testing a wireless local area networking (WLAN) in an L-band telemetry (TM) channel to evaluate the feasibility and capabilities of enhancing traditional TM methods in a seamless wide area network (WAN). Several advantages of networking are real-time command and control of instrumentation formats, quick-look acquisition, data retransmission and recovery (gapless TM) and test point real-time verification. These networking functions, and all others, need to be tested and evaluated. The iNET team is developing a WLAN based on 802.x technologies to test the feasibility of the enhanced telemetry implementation for flight testing.

      Leite, Nelson Paiva Oliveira; Walter, Fernando; CTA - Grupo Especial de Ensaios em Vôo; ITA - Divisão de Telecomunicações (International Foundation for Telemetering, 2006-10)
      For the final evaluation of a GPS attitude determination algorithm, it was determined its true performance in terms of accuracy, reliability and dynamic response. To accomplish that, a flight test campaign was carried out to validate the attitude determination algorithm. In this phase, the measured aircraft attitude was compared to a reference attitude, to allow the determination of the errors. The system was built using non-dedicated airborne GPS receivers, and a complete Flight Tests Instrumentation (FTI) System. The flight test campaign was carried out at the Brazilian’s Flight Test Group T-25C 1956 Basic Trainer aircraft. The performance and accuracy of the system is demonstrated under static and dynamics tests profiles, which are fully compliant with the Federal Aviation Administration (FAA) Advisory Circular (AC) 25-7A. Dynamic response of the system is evaluated.
    • IEEE1588 – A solution for synchronization of networked data acquisition systems?

      Corry, Diarmuid; ACRA CONTROL INC (International Foundation for Telemetering, 2006-10)
      One of the problems for manufacturers and users of flight test data acquisition equipment, is to guarantee synchronization between multiple units acquiring data on the vehicle. Past solutions have involved proprietary interconnects and multiple wire installations increasing weight and complexity and reducing inter-operation of units. This problem has become particularly important given the trend towards commercial busses, especially Ethernet, as a system interconnect. The IEEE1588 standard offers a way to transmitting time accurately over Ethernet. This paper discusses the standard, how it might be implemented, and examines the issues involved in adopting this standard for flight test data acquisition. A particular implementation that results in a synchronized four-wire Ethernet based distributed data acquisition system is discussed in section 3.
    • !a_waste_of_time

      Creel, Larry; Torres, Miguel; White Sands Missile Range (International Foundation for Telemetering, 2006-10)
      Time has always been the elusive fourth dimension - until now. Using a common programming language and a network-to-PCM interface, the power to generate time codes is facilitated using a non-traditional approach. This novel approach to time simulation addresses the common conundrums concerning time code simulation and testing. Practical applications will be discussed along with an intriguing technical demonstration.

      Beard, Randal W.; Taylor, Clark N.; Bradley, Justin; Prall, Breton; Brigham Young University (International Foundation for Telemetering, 2006-10)
      Brigham Young University recently introduced a project for undergraduates in which a miniature unmanned aerial vehicle system is constructed. The system is capable of autonomous flight, takeoff, landing, and navigation through a planned path. In addition, through the use of video and telemetry collected by the vehicle, accurate geolocation of specified targets is performed. This paper outlines our approach and successes in facilitating this accomplishment at the undergraduate level.
    • Cognitive Ad-hoc Wireless Networks

      Kosbar, Kurt; Panagos, Adam; Telemetry Learning Center (International Foundation for Telemetering, 2006-10)
      Spectrum allocation in wireless communication and telemetry systems of the future may be performed in a dynamic and distributed manner, as opposed to static centralized regulations currently in place. This paper surveys a new area of research in the communications field known as cognitive radio which will allow dynamic sharing of spectral bands. An introduction to cognitive radio, a review of existing research results, and discussion of open problems in the area is provided.
    • IP Protocols in Telemetry Systems

      Weaver, Robert Jr.; Snyder, Ed; Apogee Labs, Inc. (International Foundation for Telemetering, 2006-10)
      This paper is intended to provide background into networking and IP protocols for non-IT personnel. It is not a study of networking and related protocols, as each of these topics would require a much longer period of time to explain. Addressed are considerations that should be required prior to locking a network design into a specific architecture. The systems available today, for the same cost as a good home PC, are becoming capable of performing critical tasks. It is highly recommended that the personnel who know the most about the data and how it will be used communicate with the personnel that know the network. Failing to explain or understand the networking nomenclature causes considerable wasted time and money. This paper is intended to encourage communications between the data creators and the data movers. We also want to demonstrate how new systems, hardware and software, designed to work with existing network devices used in non–telemetry applications, can make implementing IP in telemetry networks easier.

      Kosbar, Kurt; Lord, Dale; Telemetry Learning Center (International Foundation for Telemetering, 2006-10)
      Recent emphasis has been placed on mobile robotics performing in unstructured environments. This realm of operations requires many different algorithms to interpret the various situations. This not only requires a system that is able to support, and facilitate, the fusion of the results, but it also needs to be tolerant of system errors. In modern operating systems, separate processes are able to fail without affecting other processes. Using this ability, along with fault tolerant inter-process communications, and supervisory process managers, allows the total system to continue to operate under adverse conditions. While this paper focuses primarily on the challenges faced by mobile robotics, the approach can be extended to a wide range of systems which must autonomously identify and adapt to failures/situations.
    • Data Filtering Unit (DFU): Dealing With Cryptovariable Keys in Data Recorded Using the IRIG 106 Chapter 10 Format

      Manning, Dennis; Williams, Rick; Ferrill, Paul; Eglin Air Force Base; Scientific Data Systems, LLC; Avionics Test and Analysis Corp. (International Foundation for Telemetering, 2006-10)
      Recent advancements in IRIG 106 Chapter 10 recording systems allow the recording of all on board 1553 bus and PCM traffic to a single media. These advancements have also brought about the issue of extracting data with different levels of classification that was written to single location. Carrying GPS “smart” weapons further complicates this issue since the recording of GPS keys adds another level of classification to the mix. The ability to separate and/or remove higher level data from a data product is now required. This paper describes the design of a hardware device that will filter specified data from IRIG 106 Chapter 10 recorder memory modules (RMMs) to prevent the storage device or computer from becoming classified at the level of the specified data.